Are jQuery UI key is required when i want to use Google Ajax API

i want to use Google j开发者_运维问答Query UI. are i can use them without key.

are i can get the custom css of jQuery UI from CDN if i want.

You don't need API key just use this for latest version of jQuery:

<script type="text/JavaScript"  charset="utf-8" src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>

For jQuery UI:

<script type="text/javascript"  charset="utf-8" src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.7/jquery-ui.min.js"></script>